Sunrace 6/7S R37 Rear Derailleur
The Sunrace R37 rear derailleur is a good alternative for classic road bicycles that need a component upgrade. It is made of aluminium and steel and is compatible with sprockets from 11 to 28 teeth and with transmissions up to 7 speeds.. Sunrace products have an excellent price-performance ratio and are very precise and solid components. A brand for life you can rely on to improve your bike.
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